javascript - console.log 是所有项目的总和的函数

Question

我想创建一个名为 totalPriceCheck 的函数，console.log 是所有 shoppingCart 商品的总和。

var shoppingCart = [];

function addToCart (name, price) {
    var object = {};
    object.name = name;
    object.price = price;
    shoppingCart.push(object);
}

function priceCheck(item){
    for (var i = 0; i < shoppingCart.length; i += 1) {
        if (item === shoppingCart[i].name) {
            console.log(shoppingCart[i].price + " sheqalim");
        } else {
            console.log("the searched item is not in the shopping cart array!");
        }
    }
}

function totalPriceCheck(){
    for (var i = 0; i < shoppingCart.length; i += 1) {
        var totalPriceOf = shoppingCart[i].price;    
        var myTotal = 0;  

        for(var i = 0, len = totalPriceOf.length; i < len; i++) {
            myTotal += totalPriceOf.price;  
        }
        console.log(myTotal);
    }
}

addToCart ('beer', 5);
totalPriceCheck();

Answer 1

我无法正确理解你的问题，但我认为你需要这样的输出。我正在对您的代码进行一些更改，请引用下面的代码

以下代码的输出为:- 15

如果添加addToCart('beer', 5);，那么输出将是20

var shoppingCart = [];

function addToCart(name, price) {
    var object = {};
    object.name = name;
    object.price = price;

    shoppingCart.push(object);
}

addToCart('beer', 5);
addToCart('beer', 5);
addToCart('beer', 5);

function totalPriceCheck() {
    var myTotal = 0;
    for (var i = 0; i < shoppingCart.length; i += 1) {
        var totalPriceOf = shoppingCart[i].price;
        myTotal += totalPriceOf;
    }
    console.log(myTotal);
}

totalPriceCheck();